When did Bones Season 4 Episode 20 air?
Bones Season 4 Episode 20 aired on April 15, 2009.


Every body has secrets.
Dr. Temperance Brennan and her colleagues at the Jeffersonian's Medico-Legal Lab assist Special Agent Seeley Booth with murder investigations when the remains are so badly decomposed, burned or destroyed that the standard identification methods are useless.

Booth and Brennan are called when an image of the Virgin Mary is found in a bale of compressed cardboard.
Direct answers for episode-level questions and details.
Bones Season 4 Episode 20 aired on April 15, 2009.
This episode runs for approximately 44 minutes.
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